Thanks! I was able to see the solution using Paraview. However, I am getting errors, solutions, probably I am making the mistake when I do BC. Or does it have anything to do with choosing iterative solvers? Moreover, I am trying just laminar flow.
If the problem comes from defining the BC, perhaps, I can name the mesh (inlet, outlet, walls, and sphere), in that case, how can I define those naming in BC from exported mesh files.